PATHOLOGY

Detailed explanation-1: -Skin tone is the surface skin color, whereas skin undertone is the subtle hue underneath the surface. Skin tone is determined by the amount of melanin (skin pigment) present in the uppermost layer of your skin. The 4 Main Types Of Skin Tones Are: Light.

Detailed explanation-2: -Type I (scores 0–6) always burns, never tans (palest; freckles) Type II (scores 7–13) usually burns, tans minimally (light colored but darker than fair) Type III (scores 14–20) sometimes mild burn, tans uniformly (golden honey or olive) Type IV (scores 21–27) burns minimally, always tans well (moderate brown)

Detailed explanation-3: -Differences in skin and hair color are principally genetically determined and are due to variation in the amount, type, and packaging of melanin polymers produced by melanocytes secreted into keratinocytes. Pigmentary phenotype is genetically complex and at a physiological level complicated.